Manufacture of belting



0. E. SMITH.

MANUFACTURING BELTING.

No. 24,243, PatentedMay 31, 1859.

UNTTED STATES PATENT OFFICE.

CHARLES E. SMITH, OF PHILADELPHIA, PENNSYLVANIA.

. MANUFACTURE OF BELTING.

Specification of Letters Patent No. 24,243, dated May 31, 18159.

To all whom it may concern:

Be it known that I, CHARLES EAsTwIoK SMITH, of the city and county ofPhiladelphia, in the State of Pennsylvania, have invented a new anduseful Improvement in the Manufacture of Continuous Belting or Bands,and do declare the following to be a full and exact description of thesame, reference being had to the accompanying drawm s.

Itolled iron bands have been found to be a very useful substitute inhoisting machines, and for other purposes, for wire rope or chains, butmuch difliculty has been experienced heretofore in securing the piecestogether so as to make a continuous piece. Various modes have beenadopted to effect this purpose, either by welding, or by riveting thepieces at the oint. The difficulty in practice is to give suflicientstrength to the joint and at the same time preserve sufficientpliability at the joint to enable it to conform to the winding cylinder,and thus to avoid the fatigue or wear of the iron at the joint by itsbeing continually strained around the cylinder, and again straightenedon being unwound. The nature of my improvement consists in uniting thepieces of belt or band in such a way that a secure joint shall beobtained, together with suflicient flexibility to avoid the evils abovementioned.

Figure 1, in the accompanying drawings, represents a vertical section orelevation of two pieces of band iron united together by my joint; andFig. 2, a top view of the same.

A, B, in Fig. 1, represents the-vertical section of the lower strip ofband iron, and C, D, the upper strips. a, b, h, c, f, in Fig.

2, represents the extremity of the lower strip of iron, A, B. The bandA, F, is generally from four to seven inches wide and from aboutone-eighth to three-sixteenths of an inch thick. From the line 6, g, Ilay off the distance g, b, which in practice I make equal to three orfour times the width, 6, g. I lay 011' m, n, on the extremity one inchand draw a line from n to g. I then cut oif from the upper piece of bandiron the piece a, 0, g, leaving the upper band iron of the shape Z, m,n, g, 1". The upper strip of band iron is then laid over the lower stripuntil the point 9 of the upper band is immediately transversely oppositeto the point e, of the lower band. The line circumscribing the lap orjoint will form the rhomboidal figure, b, h, e, m, n, g, which would bea pure rhomboid, were it not for the little pieces taken off at b, h,and m, n. The two pieces being thus lapped at their extremities so as toform a rhomboidal lap are to be riveted together by rivets placed atsuitable distances apart along the lap, as shown in the drawings. Fromthe inspection of the drawing, it will be seen that while a joint ofconsiderable length, m, b, is obtained the thickness of the metal in thejoint is only duplicate at or about the middle line 6, g, and hence muchgreater flexibility is obtained than could be obtained by a more nearlyrectangular shaped lap where the thickness of the metal was duplicatedover the whole or greater part of the joint.

Having thus described my improvement, what I claim as my invention, anddesire to secure by Letters Patent is- The manufacture of continuousbelting or bands by uniting pieces of band iron by lapping and rivetingtwo beveled ends so as to produce a rhomboidal joint in the manner andfor the purpose substantially as dey Witnesses:

J. WESLEY J oNns, WM. E. C. Coxn.

